Add '!nocheck' to build dependencies called 'libtest-*'.

This catches some of the cases where upstream doesn't differentiate between
build_requires and test_requires.
8 jobs for post-buster in 9 minutes and 58 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #397334
build

00:03:25

 
  Test
passed #397339
autopkgtest

00:06:31

passed #397340
blhc

00:01:13

passed #397338
allowed to fail
lintian

00:01:42

passed #397341
piuparts

00:06:20

passed #397337
reprotest

00:03:43

passed #397336
test-build-all

00:03:29

passed #397335
test-build-any

00:02:04